Guardian Metal Resources (GMTL): which funds own it
A 13F shows the portfolio at quarter-end and is filed up to 45 days later: these are not real-time positions and they may have changed.
Sections with a free account
No concentrated manager holds it.
Who owns Guardian Metal Resources?
Guardian Metal Resources trades in the U.S. through ADRs, certificates that represent shares of a non-U.S. company. Form 13F counts ADRs while the company reports ordinary shares, so we do not compute percentages. Holders reporting more than 5% of the ordinary shares to the SEC (Schedules 13D/13G): Ucam, 22.0% (13G/A filed Jul 2, 2026) and Duquesne Family Office, 12.7% (13G/A filed Sep 14, 2026). As of Jun 30, 2026, the largest ADR holders reported on Form 13F were Philosophy Capital Management (871,708 ADRs), Driehaus Capital Management (860,026 ADRs) and Potrero Capital Research (629,393 ADRs).
Which institutions hold the most Guardian Metal Resources shares?
Per Form 13F filings as of Jun 30, 2026, in ADRs:
- 1. Philosophy Capital Management: 871,708 ADRs
- 2. Driehaus Capital Management: 860,026 ADRs
- 3. Potrero Capital Research: 629,393 ADRs
- 4. T. Rowe Price Investment Management: 515,024 ADRs
- 5. Aventail Capital Group: 497,219 ADRs
- 6. Ardsley Advisory Partners: 400,000 ADRs
- 7. Picton Mahoney Asset Management: 292,832 ADRs
- 8. Bank of Montreal: 243,279 ADRs
- 9. Diametric Capital: 209,761 ADRs
- 10. Westerly Capital Management: 200,000 ADRs
Sources:13G/A by Ucam (Jul 2, 2026) ↗13G/A by Duquesne Family Office (Sep 14, 2026) ↗All of the company's proxy statements on EDGAR ↗
We hold 13D and 13G filings made since Dec 23, 2024: a holder above 5% that has not filed since then does not appear here.
Quarter flow (concentrated managers)
Concentrated managers holding it
None in the latest quarter.
Largest holders of GMTL (all 13F filers)
- Philosophy Capital Management872 KType not verified+872 K
- Driehaus Capital Management860 KType not verified+305 K
- Potrero Capital Research629 KInvestment firm+270 K
- T. Rowe Price Investment Management515 KInvestment firm−596 K
- Aventail Capital Group497 KType not verified+66 K
- Ardsley Advisory Partners400 KInvestment firm+400 K
- Picton Mahoney Asset Management293 KType not verified−17 K
- Bank of Montreal243 KBank or trading desk+233 K
- Diametric Capital210 KType not verified+52 K
- Westerly Capital Management200 KInvestment firm+199 K
- Shares
- 872 K
- Change
- +872 K
See more
- Type
- Type not verified
- Value
- $12.2M
- Shares
- 860 K
- Change
- +305 K
See more
- Type
- Type not verified
- Value
- $12.0M
- Potrero Capital Research
- Shares
- 629 K
- Change
- +270 K
See more
- Type
- Investment firm
- Value
- $8.8M
- Shares
- 515 K
- Change
- −596 K
See more
- Type
- Investment firm
- Value
- $7.2M
- Shares
- 497 K
- Change
- +66 K
See more
- Type
- Type not verified
- Value
- $7.0M
- Ardsley Advisory Partners
- Shares
- 400 K
- Change
- +400 K
See more
- Type
- Investment firm
- Value
- $5.6M
- Shares
- 293 K
- Change
- −17 K
See more
- Type
- Type not verified
- Value
- $4.1M
- Shares
- 243 K
- Change
- +233 K
See more
- Type
- Bank or trading desk
- Value
- $4.7M
- Diametric Capital
- Shares
- 210 K
- Change
- +52 K
See more
- Type
- Type not verified
- Value
- $2.9M
- Westerly Capital Management
- Shares
- 200 K
- Change
- +199 K
See more
- Type
- Investment firm
- Value
- $2.8M
The 10 13F filers with the most shares as of Jun 30, 2026, whatever their type (index firms usually come first). “Change”: shares added or cut versus the previous quarter, split-adjusted; “no data” = there is no comparable portfolio for the previous quarter (no filing, or a filing with its holdings under confidential treatment). “% of the company” only where shares outstanding are up to date. Entities of the same group file separately and some 13F filings include other managers: there may be double counting. With a free account: the top 25, the largest buyers and the largest sellers.
Insiders (Form 4)
Open-market purchases, excluding 10b5-1 plans. Officers and directors only; joint filers of the same purchase count as one. 10% owners with no role are shown separately. 0 = nobody bought; “no data” = we do not have its Form 4 filings.
Each of the company's Form 4 filings, on EDGAR ↗Latest trades, with date and filing →
Above 5% (13D/13G)
Disclosed stakes, with their amendments. A filing is not always a purchase: there are also reductions and changes of filing entity.
This list may be incomplete: we hold 13D and 13G filings made since Dec 23, 2024. A holder above 5% that has not filed anything since then is not shown here.
- Duquesne Family Office12.7%13G · amendmentfiling ↗Event: Mar 31, 2026 · filed: Sep 14, 2026
- Duquesne Family Office12.7%13Gfiling ↗Event: Mar 31, 2026 · filed: Sep 14, 2026
- Ucam22%13G · amendmentfiling ↗Event: Jun 30, 2026 · filed: Jul 2, 2026
Above 5% over time (13D/13G)
Each holder with its filings in order. History since December 2024.
This company filed no 8-K forms in the last year. Foreign companies listed in the US (ADRs) report material events on forms 6-K and 20-F, and ETFs and funds do not file 8-Ks. If it is a foreign company listed in the US through ADRs (American Depositary Receipts), what trades are bank-issued certificates that represent shares from its home market. See its filings on EDGAR ↗
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